Just picked up a new 2019 TT RS, without the Technology package. ($3500 seemed damn steep to me.) Anyway, have found the MMI interface a little lacking, and I miss CarPlay from my last car. I see that Audi sells the Smartphone Interface for retrofit. However, the webpage at parts.audiusa.com indicates that it's not compatible with the TT RS; only the TT (and I would presume, the TT S as well.) Does this make sense to anyone? Is there something so different about the RS's MMI or whatever that makes it incompatible?